/**
 * El Attareen Group - Global Styles and Layout Primitives
 * Modern CSS with logical properties for robust RTL/LTR symmetry
 */

/* Skip to Content for Accessibility */
.skip-link {
  position: absolute;
  top: -9999px;
  inset-inline-start: var(--space-md);
  z-index: var(--z-skip-link);
  padding: var(--space-sm) var(--space-md);
  background-color: var(--color-bronze-400);
  color: var(--color-obsidian-950);
  font-weight: 700;
  font-size: var(--text-sm);
  border-radius: var(--radius-xs);
  text-decoration: none;
  transition: top var(--duration-fast) var(--ease-smooth);
}

.skip-link:focus {
  top: var(--space-md);
  outline: 2px solid var(--color-pure-white);
  outline-offset: 2px;
}

/* Custom Architectural Scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--color-obsidian-950);
}

::-webkit-scrollbar-thumb {
  background: var(--color-obsidian-700);
  border-radius: var(--radius-xs);
  border: 2px solid var(--color-obsidian-950);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-graphite-400);
}

/* Layout Containers */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-md);
}

.container-narrow {
  width: 100%;
  max-width: var(--container-narrow);
  margin-inline: auto;
  padding-inline: var(--space-md);
}

.container-wide {
  width: 100%;
  max-width: var(--container-wide);
  margin-inline: auto;
  padding-inline: var(--space-md);
}

/* Section Spacing */
.section {
  position: relative;
  padding-block: var(--space-section);
  overflow: hidden;
}

.section-tight {
  padding-block: var(--space-xl);
}

.section-dark {
  background-color: var(--surface-primary);
  color: var(--text-primary);
}

.section-ground {
  background-color: var(--surface-ground);
  color: var(--text-primary);
}

.section-light {
  background-color: var(--surface-light-ground);
  color: var(--text-light-primary);
}

/* Structural Grids and Flex Utilities */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-lg);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
}

.grid-split {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: var(--space-xl);
  align-items: center;
}

.grid-split-reversed {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: var(--space-xl);
  align-items: center;
}

.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

.flex-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.flex-col {
  display: flex;
  flex-direction: column;
}

/* Architectural Dividers and Structural Lines */
.arch-line {
  display: block;
  width: 100%;
  height: 1px;
  background: var(--surface-border);
  margin-block: var(--space-lg);
}

.arch-line-vertical {
  width: 1px;
  height: 100%;
  background: var(--surface-border);
}

.arch-tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-2xs) var(--space-sm);
  background-color: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-xs);
  font-size: var(--text-xs);
  color: var(--text-secondary);
}

/* Visual Focus States for WCAG Compliance */
:focus-visible {
  outline: 2px solid var(--color-bronze-400);
  outline-offset: 3px;
}

button:focus-visible,
a:focus-visible {
  outline: 2px solid var(--color-bronze-400);
  outline-offset: 3px;
}